LoopFest XX

Session

Thursday Afternoon Session 1

May 12, 2022, 2:00 PM

Benedum Hall 157 (University of Pittsburgh)

100. Jets and jet substructure experiment

Nicholas Smith (FNAL)

5/12/22, 2:00 PM

86. An automated framework to calculate jet and beam functions at NNLO

Kevin Brune

5/12/22, 2:25 PM

We present a novel formalism to calculate beam and jet functions automatically at next-to-next-to-leading
order in perturbation theory. By employing suitable phase-space parameterisations in combination with
sector-decomposition steps and selector functions, we managed to factorise all divergences in the
phase-space integrations, and we implemented our framework in the publicly available...

114. Recent jet substructure calculations and comparison to LHC data

Felix Ringer

5/12/22, 2:43 PM

82. New insights on strong coupling extractions from Soft Collinear Effective Theory

Jim Talbert

5/12/22, 3:08 PM

I will discuss the application of Soft Collinear Effective Theory (SCET) to the extraction of the strong coupling constant from e+e- event shape distributions, where state-of-the-art results exhibit a few sigma discrepancy with respect to the PDG world average. After briefly introducing event shape distributions and the SCET resummation formalism we use to study them, I will then focus on the...

78. Quark and Gluon Contributions to QCD Trace Anomaly at Four Loops

Dr Taushif Ahmed (University of Torino)

5/12/22, 3:26 PM

The QCD energy-momentum tensor exhibits the well-known property of trace anomaly. The anomalous contribution can be distributed among the quark and gluon parts. Although the total energy-momentum tensor remains unrenormalized owing to the conservation of energy and momentum, the individual components do go through ultraviolet renormalization. We perform this renormalization at four-loop level....

91. Color singlet decays at NNLO QCD with MCFM

Benoit Assi

5/12/22, 3:44 PM

We present an implementation of the nested soft-collinear subtraction scheme for color singlet decay processes at NNLO. The scheme is of particular utility in the typically poorly convergent subtracted double-real emission corrections. We demonstrate the cancellation of soft and collinear singularities through scaling behaviour analysis. We also discuss possible avenues to parton shower...